Lawn sprinklers



Feb. 28, 1961 H. J. KAcHERGls 2,973,149

LAWN SPRINKLERS Filed oct. 1o, 1958 2 xlmnlII-ulunnl a l0 l I ig. 1

INVENTOR nrg .I Kachergs ilnited States Patent O LAWN SPRINKLERS Henry J. Kachergs, Waterbury, Couu.,assignor, by mesne assignments, to OttoBernz Company, Inc., Rochester, N.Y., a corporation of New York riesca.. 10.19.53. ser. No. 166.605

3 Claims. (Cl. 239-273) This invention relates to lawn sprinklers and more particularly to sprinklers adapted to cover a square area.

It is well-known that in urban areas due to sidewalks, streets and boundary lines, the lawns commonly located around the average house are of a square or rectangular shape. The common cheaper type sprinkler is usually designed to cover a round area and is very unsuitable for properly irrigating relatively small lawns close to houses.

Also, attempts have been made to produce sprinklers capable of covering rectangular or square areas but such sprinklers that have been made to adequately cover square areas have been of the more complex type requiring munerous operating parts and consequently are costly to manufacture. Other sprinklers in the lower cost bracket intended to cover pattern areas also have been produced but these sprinklers have been very inadequate to assure a proper over-all uniform coverage for a given pattern area.

One of the objects of my invention is to provide an improved lawn sprinkler whereby the above diiculties and disadvantages are overcome and will insure a uniform coverage in a square pattern area.

Another object is to provide a sprinkler which will accomplish the above results and is made with relatively few parts and simple in construction. Due to the simplicity of construction, it may be produced at small cost.

Further objects and advantages of my invention will hereinafter more fully appear.

In the accompanying drawing:

Fig. 1 is a plan view of a square pattern sprinkler embodying my invention;

Fig. 2 is a cross-sectional view through the same taken along the lines 2-2 of Fig. 1;

Fig. 3 is a similar cross-sectional view taken along the line 3-3 of Fig. 1;

Fig. 4 is a side view of the sprinkler head on a larger scale;

Fig. S is a side view of the rotary vane, per se; and,

Fig. 6 is a diagrammatic plan view showing the manner in which the jets of water issuing from the sprinkler cover a square pattern area.

Referring now to the drawing, the numeral 10 designates a sprinkler base formed with an elbow connection 11 having an inlet port 12. swivel nut 13 is mounted on the outer end of the elbow 11 to which may be connected the water supply hose in the usual manner. The opposite end of the elbow has a bushing 14 threaded thereinto, said bushing having a vertical passage-way 15 joined to the inlet port 12. p'

Attached to the bushing 14 is a sprinkler head 16 having a chamber 17 into which water tlows from the passage-way 15. Specifically, the head 1,6 consists of two members, a` domed upper wall 18 and a at base 19, the domed wall being attached to the base periphery by a crimping operation as indicated at 20, andthe base 19, in turn, is secured to the upper end of the bushing y14 as by a rivet flange 21. Y

In order to distribute the uid from the sprinkler in 2,973,149 Patented Feb. 28, 196,1

a square pattern area, I provide -a series of ports 22 in the domed wall of the sprinkler head 16, said ports, as best seen in Fig. l, being arranged in substantially a square patternY and uniformly spaced apart from each other. The axes of the ports are preferably arranged at right angles to the surface of the domed wall 18v and the shape of said domed Wall is such that the laxes of the corner ports 22ay are about 45 from the horizontal as indicated inr Fig. 3 toy obtain the maximum distance, while the axes ofthe ports 2:2b adjacent the center of the square sides are positioned about 75 from the horizontal as indicated at Fig. 2 with the axes of the ports therebetween being progressively angled between the above two ranges.

In order to intercept the jets of uid emitted from all the ports of the square pattern arrangement, except the corner ports, for the purpose of breaking up the jet stream and dispersing the same to assure a more uniform and even distribution of lluid closer to the sprinkler base, I have provided a vane member 23 having a center bearing bushing 24 rotatable on a stem 24a secured to the domed wall 18 in alignment with the sprinkler axis. The vane member consists of four relatively large blades 25 with relatively wide V-slots therebetween and inclined so that the water jets from the ports 22 impingin-g against the underside of said blades will cause the vane member 23 to rotate in a clockwise direction as viewed in Fig. 1.

In sprinklers of this type, it is customary for the vane member to rotate very rapidly and to assure that some portion of fluid flowing through the ports will not be continuously intercepted by the full width of the blades 25. I have arranged the terminal edges 25a of the blades on arcs that are eccentric to the sprinkler axis and inclined upwardly from the horizontal plane, and the blades, per se, are arcuately-shaped in transverse cross-section. Specically, the length of the blades 25 and their angular pitch are such that the leading corner 255 of each blade will intercept the jets from several of the ports 22 adjacent the center of the square sides. In providing relative wide V-slots between the blades, these jets will be momentarily projected through said slots in an uninter-A rupted manner and then progressively intercepted by the blades as the vane is caused to rotate. The position of the trailing corners 25e of the blades which are farthest from the sprinkler axis and at a considerable higher elevation rotate in a circle as dened by the dot and dash line shown in Fig. 6 and are such that they will not intercept the jets from the corner ports of the square pattern, and preferably, I pre-fer to have the jets from the three corner ports unintercepted so as to assurethat the full amount of fluid jets emitted from the three corner ports will continu-ally reach the corners o-f the pattern area to be irrigated. Inasmuch as it is the tendency for the rapidly rotating vane member to break up and draw thedischarging uid jets inwardly toward the center of the area to be covered, the sides of the square pattern v of ports on the domed wall V18 are bowed slightly outwardly as viewed in Fig. 1 so as to assure a square area of fluid coverage.

`While one form of the invention has been `shown for purpose of illustration, it will be apparent that the above construction may be modified without departing from the spirit' of the invention as set forth in the following claims. Y

What is claimed:

1. A sprinkler for spraying a square area comprising a base, a hollow chamber mounted on said base, means .connecting'said base to a fluid supply, said chamber having a-substautially spherical domed upper-wall, a series tern sides to the corners, and a rotary vane member mounted on said domed upper wall in line with the sprinkler axis, said vane member comprising aseries of inclined blades projected into line with some of the axes of the discharge ports whereby rotary movement will be imparted to said vane member by the jets issued fromV the discharge ports, the length of said blades being such that they do not intercept the jets from one or more of the discharge ports adjacent each corner of the square pattern.

2. A sprinkler as dei-ined in claim 1 wherein all of said discharge ports are substantialiy uniformly spaced apart from each other and wherein `the pattern of said jets owing from -the discharge ports las the vane member rotates. p

References Cited in the file of this patent UNITED STATES PATENTSY 1,007,658 Nelson Oct. 31, 1911 1,702,605 Hartman Feb. 19, 1929 1,965,633 Faucher ..V July l0, 1934 2,515,598 Hanson July 18, 1950 

